package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    /**
     * 正常访问ok
     * @param id
     * @return
     */
    public String paymentInfo_Ok(Integer id){
        return "线程池"+Thread.currentThread().getName()+"   paymentInfo_Ok,id: "+id+"\t"+"哈哈";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentInfo_TimeOut(Integer id){
        //int timeNumber = 5;
        int age = 10/0;
        //暂停几秒钟线程
//        try {
//            TimeUnit.SECONDS.sleep(timeNumber);
//        }catch (Exception e){
//            e.printStackTrace();
//        }
        return "线程池"+Thread.currentThread().getName()+"   paymentInfo_TimeOut,id: "+id+"\t"+"哈哈"+"  耗时(秒)";
    }

    /**
     * 兜底的方法
     * @param id
     * @return
     */
    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池"+Thread.currentThread().getName()+"   系统繁忙，请稍后再试,id: "+id+"\t"+"哈哈Handler";
    }

    //===============以下服务熔断=====上面是服务降级=============
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间范围
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id")Integer id){
        if (id < 0){
            throw new RuntimeException("**********id 不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功，流水号："+serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id")Integer id){
        return "id 不能为负数，请稍后再试，/(T o T)/~~~ id: "+id;
    }

}
